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https://issues.apache.org/jira/browse/MAPREDUCE-2248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12980951#action_12980951
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Ramkumar Vadali commented on MAPREDUCE-2248:
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TEST RESULTS
{code}
test-junit:
[junit] WARNING: multiple versions of ant detected in path for junit
[junit]
jar:file:/home/rvadali/local/external/ant/lib/ant.jar!/org/apache/tools/ant/Project.class
[junit] and
jar:file:/home/rvadali/.ivy2/cache/ant/ant/jars/ant-1.6.5.jar!/org/apache/tools/ant/Project.class
[junit] Running org.apache.hadoop.hdfs.TestRaidDfs
[junit] Tests run: 4, Failures: 0, Errors: 0, Time elapsed: 524.787 sec
[junit] Running
org.apache.hadoop.hdfs.server.namenode.TestBlockPlacementPolicyRaid
[junit] Tests run: 6, Failures: 0, Errors: 0, Time elapsed: 154.653 sec
[junit] Running org.apache.hadoop.raid.TestBlockFixer
[junit] Tests run: 14, Failures: 0, Errors: 0, Time elapsed: 944.872 sec
[junit] Running org.apache.hadoop.raid.TestDirectoryTraversal
[junit] Tests run: 3, Failures: 0, Errors: 0, Time elapsed: 13.241 sec
[junit] Running org.apache.hadoop.raid.TestErasureCodes
[junit] Tests run: 3, Failures: 0, Errors: 0, Time elapsed: 17.78 sec
[junit] Running org.apache.hadoop.raid.TestGaloisField
[junit] Tests run: 7, Failures: 0, Errors: 0, Time elapsed: 0.293 sec
[junit] Running org.apache.hadoop.raid.TestHarIndexParser
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0.036 sec
[junit] Running org.apache.hadoop.raid.TestRaidFilter
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 15.007 sec
[junit] Running org.apache.hadoop.raid.TestRaidHar
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 178.351 sec
[junit] Running org.apache.hadoop.raid.TestRaidNode
[junit] Tests run: 4, Failures: 0, Errors: 0, Time elapsed: 646.931 sec
[junit] Running org.apache.hadoop.raid.TestRaidPurge
[junit] Tests run: 4, Failures: 0, Errors: 0, Time elapsed: 253.727 sec
[junit] Running org.apache.hadoop.raid.TestRaidShell
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 21.994 sec
[junit] Running org.apache.hadoop.raid.TestRaidShellFsck
[junit] Tests run: 11, Failures: 0, Errors: 0, Time elapsed: 270.783 sec
[junit] Running org.apache.hadoop.raid.TestReedSolomonDecoder
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 25.14 sec
[junit] Running org.apache.hadoop.raid.TestReedSolomonEncoder
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 3.769 sec
{code}
{code}
[exec]
[exec] +1 overall.
[exec]
[exec] +1 @author. The patch does not contain any @author tags.
[exec]
[exec] +1 tests included. The patch appears to include 4 new or
modified tests.
[exec]
[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
[exec]
[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
[exec]
[exec] +1 findbugs. The patch does not introduce any new Findbugs
(version 1.3.9) warnings.
[exec]
[exec] +1 release audit. The applied patch does not increase the
total number of release audit warnings.
[exec]
[exec] +1 system test framework. The patch passed system test
framework compile.
[exec]
[exec]
[exec]
[exec]
[exec]
======================================================================
[exec]
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[exec] Finished build.
[exec]
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[exec]
{code}
> DistributedRaidFileSystem should unraid only the corrupt block
> --------------------------------------------------------------
>
> Key: MAPREDUCE-2248
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2248
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 0.23.0
> Reporter: Ramkumar Vadali
> Assignee: Ramkumar Vadali
> Fix For: 0.23.0
>
> Attachments: MAPREDUCE-2248.1.patch, MAPREDUCE-2248.patch
>
>
> DistributedRaidFileSystem unraids the entire file if it hits a corrupt block.
> It is better to unraid just the corrupt block and use the rest of the file as
> normal. This becomes really important when we have tera-byte sized files.
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